Johnson & Phillips, Ltd.

DRAW-OUT TRUCK TYPE SWITCHBOARD.

The stationary portion of each cubicle is bolted to the floor and contains the bus
bars, fixed contacts, cable box, or cable sealing end. The truck carries the oil switch,
current, and potential transformers, and the instruments which are mounted on the
front plate. When the truck is withdrawn for inspection all the parts upon it are
automatically rendered 'dead' and, at the same time, the fixed contacts, which
remain 'live,' are automatically screened.

. 553.